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    SubjectRe: [RFC][PATCH 7/8] Convert sparc to use arch_getoffset() infrastructure.
    From: john stultz <>
    Date: Tue, 14 Apr 2009 18:51:26 -0700

    > You acked this patch earlier, but I've just tried building with a
    > cross-compiler environment I had access to and had problems getting it
    > to build.
    > It seems the pci_do_get/settimeofday() and the bus_do_get/settimeofday()
    > redirection code is causing some trouble. I'm really not sure how the
    > BTFIXUPSET_CALL code works, so I don't want to just kill it off.
    > Any advice here on how to do this right?

    BTFIXUP is basically a kernel boot time patching service, but
    it only works if we can declare function prototypes in the
    sparc specific header files.

    Since do_gettimeofday() doesn't fall into that requirement, the code
    in pci_time_init() is patching the first two instructions of
    do_gettimeofday() such that is makes a call to pci_do_gettimeofday().

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